6425291551 has 12 divisors (see below), whose sum is σ = 7493555160. Its totient is φ = 5493218640.

The previous prime is 6425291549. The next prime is 6425291563. The reversal of 6425291551 is 1551925246.

6425291551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6425291551 - 2¹ = 6425291549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6425291501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149485 + ... + 187606.

It is an arithmetic number, because the mean of its divisors is an integer number (624462930).

Almost surely, 2^6425291551 is an apocalyptic number.

6425291551 is a deficient number, since it is larger than the sum of its proper divisors (1068263609).

6425291551 is a wasteful number, since it uses less digits than its factorization.

6425291551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337494 (or 337487 counting only the distinct ones).

The product of its digits is 108000, while the sum is 40.

The square root of 6425291551 is about 80157.9163339467. The cubic root of 6425291551 is about 1859.0780059715.

The spelling of 6425291551 in words is "six billion, four hundred twenty-five million, two hundred ninety-one thousand, five hundred fifty-one".